package com.usian.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.api.R;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.usian.admin.mapper.AdUserMapper;
import com.usian.admin.service.AdUserService;
import com.usian.model.admin.dtos.AdUserDto;
import com.usian.model.admin.pojos.AdUser;
import com.usian.model.common.dtos.ResponseResult;
import com.usian.model.common.enums.AppHttpCodeEnum;
import com.usian.utils.common.AppJwtUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class AdUserServiceImpl extends ServiceImpl<AdUserMapper, AdUser> implements AdUserService {


    @Override
    public ResponseResult login(AdUserDto dto) {
        //1.校验参数
        if (dto == null || StringUtils.isBlank(dto.getName()) || StringUtils.isBlank(dto.getPassword())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //2.根据用户去数据库查询用户
        QueryWrapper<AdUser> queryWrapper=new QueryWrapper<>();
        queryWrapper.lambda().eq(AdUser::getName,dto.getName());
        List<AdUser> adUserList = this.list(queryWrapper);

        if (adUserList.size()>0){
            AdUser adUser = adUserList.get(0);
            //3.用户输入密码（参数中密码）+数据库中查询数来的盐值 生成一个新的MD5密码串
            String newPwd = DigestUtils.md5DigestAsHex(dto.getPassword().concat(adUser.getSalt()).getBytes());
            //4.数据库中密码串 比较 新生成的MD5密码串，true 生成token 把 token传到前端 反之
            if (adUser.getPassword().equals(newPwd)){

                //生成token
                Map<String,Object> map=new HashMap<>();
                map.put("token",AppJwtUtil.getToken(adUser.getId().longValue()));
                adUser.setPassword("");
                adUser.setSalt("");
                map.put("user",adUser);
                return ResponseResult.okResult(map);
            }else {
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }
        }
        else {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
    }
}
